With that frame and fork + Di2 + no uberlight components + your size you don't have much choice beside lightweights for a chance to go <13lb.Don't get the special edition Lightweights, as they will look dated in a few years time. The classic lightweights will always look great. Just my $.02.

I would avoid the Extralight stem at your weight and I would also avoid the Zipp crank because the chainrings are proprietary and since Zipp stopped production of the crank theres no telling what the availability of chainrings will be.

I don't think Extralite have a weight limit. I have one which I don't use, but let me just say that the thumbtack sized bolts and 2.5 NM max torque don't inspire much confidence when riding over rough terrain or racing.

What other chainring option would you have with the Zipp crank other than fibre-lyte? (assuming your considering the Vuma)

I'm a good size rider 6 foot max 180lbs and I have the srt 24 with extralite hubs 860g in all. Last week I rode stage 7 of the tour of California up and Down. I pushed my self. making it down in 18 min at 30 mph avg from KOM 1. I put my life in the hands of my AX wheels. Having tested them for 6 months now I have confidence in them and my ability with them. I would not hold a review with so much weight, I would say have faith in the parts and the builder.

As to my statement about AX products not being usable that is for the bars , stems , seat post that all have a 75k weight limit. The wheels have a 110k weight limit and I am well under that. Putting two quotes from two topics out of contex look to be a contradiction when in fact are both true given the above information.

Trust me if I could every part of the bike would be AX it's just so well made and is a work of art !!

So she is built and I plan to do the Di2 mod to save 70-80 g as shown she is 13.33 lbs with out the iclick, and garmin clamp she was 12.8 lbs, 5808gI could swap out chain and casette and shave another 100g but she shifts so dang well.

the extralite stem came in at 88gee brakes 190 with pads & boltsMcfk 3k seat post 107g with boltsNew Ultimate water bottle cage 10g with bolts, and it works great. Reynolds RZR with out stickers 883g

I'm out of options to drop weight, less body mass. But I like my cranks as I can swap out the rings for flats or hills.

Bike rides like a dream, and lacks the sporty snap my RXR has, but wow the road is soft uder my feet with this bike. Its like im riding on glass.

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